I just got a new PB 12" (1GHz) with a 60GB drive and 512 RAM, and I've been worrying about everything (probably because it was soo expensive!). Can anyone comment on what is really normal as far as hard drive noises are concerned? Several months ago, I was told that the crackling noises my Clamshell iBook was making indicated that the hard drive was going. So when I received the PB, I naturally expected a completely silent drive from this brand new machine. But I still have crackling noises on start up and sometimes when opening applications, etc. (although all else seems to be working fine). Apple Tech support tells me that I have nothing to worry about, but I held my ear up to a PB 12" at the Apple Store the other day and swear I did not hear a thing. What is your diagnosis?